Improvement in medical compounds or salves



UNITED STATES" PATENT OFFICE.

DAVID BLOGHER AND WILLIAM MARKHAM, OF TIDIOUTE, PENNSYLVANIA;

SAID MARKHAM ASSIGNOR TO SAID BLOGHER.

' IMPROVEMENT IN MEDICAL COMPOUNDS OR SALVES.

Specification forming part of Letters Patent No. 149,188, dated March31, 1874; application filed January 20, 1871.

To all whom it may concern:

Be it known that we, DAVID BLOOHER and WVILLIAM MARKHAM, of Tidioute, inthe county of Warren and State of Pennsylvania, have invented a new andImproved Salve; and that the following is a full, clear, and exactdescription of the same. I

This invention has for its object the production of a salve; and theinvention consists in a salve made from the residuum of crude petroleum,substantially as hereinafter described.

' It is well known that in the bottoms of the tanks wherein is storedcrude petroleum direct from the wells a deposit accumulates, consist ingof parafline and heavy oleaginous substances.

We takethis substance and submit it to the direct action of live steamunder high pressure for forty-eight hours, after which the steam isturned 011' and the substance allowed to settle in the bottom of thevessehwhen it is subjected to the action of dry heat for twenty-fourhours, which drives out all the water from the substance, and the salveis at once ready for Witnesses:

Soo'r'r ALLEN, J. G. LEE.

